./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 14:50:06,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:50:06,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:50:06,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:50:06,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:50:06,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:50:06,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:50:06,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:50:06,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:50:06,390 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:50:06,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:50:06,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:50:06,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:50:06,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:50:06,391 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:50:06,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:50:06,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:50:06,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:50:06,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:50:06,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:50:06,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:50:06,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:50:06,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:50:06,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:50:06,394 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:50:06,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:50:06,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:50:06,395 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:50:06,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:50:06,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:50:06,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:50:06,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:50:06,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:50:06,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:50:06,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:50:06,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:50:06,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:50:06,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:50:06,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:50:06,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:50:06,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:50:06,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:50:06,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:50:06,414 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:50:06,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:50:06,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:50:06,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:50:06,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:50:06,604 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:50:06,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-01-27 14:50:07,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:50:07,922 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:50:07,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-01-27 14:50:07,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6435d07df/fec5b6c0f9254ebf9e0fc1b9cd4f9119/FLAGcf9fbec76 [2024-01-27 14:50:07,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6435d07df/fec5b6c0f9254ebf9e0fc1b9cd4f9119 [2024-01-27 14:50:07,949 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:50:07,950 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:50:07,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml [2024-01-27 14:50:08,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:50:08,020 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:50:08,021 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:50:08,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:50:08,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:50:08,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:50:07" (1/2) ... [2024-01-27 14:50:08,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c83f3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:50:08, skipping insertion in model container [2024-01-27 14:50:08,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:50:07" (1/2) ... [2024-01-27 14:50:08,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fb92e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:50:08, skipping insertion in model container [2024-01-27 14:50:08,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:08" (2/2) ... [2024-01-27 14:50:08,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c83f3d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08, skipping insertion in model container [2024-01-27 14:50:08,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:08" (2/2) ... [2024-01-27 14:50:08,027 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:50:08,046 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:50:08,047 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,047 INFO L98 nessWitnessExtractor]: Loop invariant at [L81-L83] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,047 INFO L98 nessWitnessExtractor]: Loop invariant at [L73-L75] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,048 INFO L98 nessWitnessExtractor]: Loop invariant at [L49-L51] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,048 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,048 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x2 == 0U [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x6 == 0U [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x4 == 0U [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x5 == 0U [2024-01-27 14:50:08,049 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x3 == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] n == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] x6 == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] n == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] x3 == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] x4 == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] x6 == 0U [2024-01-27 14:50:08,050 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] x5 == 0U [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] n == 0U [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (0LL - (long long )n) + (long long )x1 >= 0LL [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x1 == 0U [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x4 == 0U [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x5 == 0U [2024-01-27 14:50:08,051 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] n == 0U [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x6 == 0U [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (long long )n + (long long )x1 >= 0LL [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (long long )n - (long long )x1 >= 0LL [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (0LL - (long long )n) - (long long )x1 >= 0LL [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x3 == 0U [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x2 == 0U [2024-01-27 14:50:08,052 INFO L98 nessWitnessExtractor]: Location invariant after [L41-L43] n == 0U [2024-01-27 14:50:08,053 INFO L98 nessWitnessExtractor]: Loop invariant at [L41-L43] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,053 INFO L98 nessWitnessExtractor]: Loop invariant at [L57-L59] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,053 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] n == 0U [2024-01-27 14:50:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] x4 == 0U [2024-01-27 14:50:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] x6 == 0U [2024-01-27 14:50:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] x5 == 0U [2024-01-27 14:50:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] n == 0U [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] n == 0U [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] x5 == 0U [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] x6 == 0U [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,056 INFO L98 nessWitnessExtractor]: Loop invariant at [L65-L67] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,056 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-27 14:50:08,075 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:50:08,225 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-01-27 14:50:08,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:50:08,248 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:50:08,341 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-01-27 14:50:08,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:50:08,356 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:50:08,361 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08 WrapperNode [2024-01-27 14:50:08,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:50:08,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:50:08,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:50:08,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:50:08,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,410 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 163 [2024-01-27 14:50:08,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:50:08,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:50:08,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:50:08,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:50:08,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,455 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-27 14:50:08,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:50:08,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:50:08,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:50:08,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:50:08,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (1/1) ... [2024-01-27 14:50:08,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:50:08,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:50:08,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 14:50:08,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 14:50:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:50:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:50:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:50:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:50:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:50:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 14:50:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 14:50:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 14:50:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-27 14:50:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:50:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:50:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:50:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 14:50:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 14:50:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 14:50:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-27 14:50:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:50:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:50:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:50:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:50:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 14:50:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 14:50:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 14:50:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 14:50:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:50:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:50:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:50:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 14:50:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 14:50:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 14:50:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-27 14:50:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-27 14:50:08,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-27 14:50:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-27 14:50:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-27 14:50:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:50:08,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:50:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:50:08,569 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:50:08,683 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:50:08,685 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:50:08,975 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:50:08,975 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:50:09,104 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:50:09,105 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 14:50:09,106 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:50:09 BoogieIcfgContainer [2024-01-27 14:50:09,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:50:09,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:50:09,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:50:09,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:50:09,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:50:07" (1/4) ... [2024-01-27 14:50:09,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716133f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:50:09, skipping insertion in model container [2024-01-27 14:50:09,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:08" (2/4) ... [2024-01-27 14:50:09,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716133f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:50:09, skipping insertion in model container [2024-01-27 14:50:09,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:08" (3/4) ... [2024-01-27 14:50:09,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716133f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:50:09, skipping insertion in model container [2024-01-27 14:50:09,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:50:09" (4/4) ... [2024-01-27 14:50:09,116 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-01-27 14:50:09,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:50:09,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2024-01-27 14:50:09,130 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:50:09,224 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-01-27 14:50:09,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 165 transitions, 372 flow [2024-01-27 14:50:09,313 INFO L124 PetriNetUnfolderBase]: 6/159 cut-off events. [2024-01-27 14:50:09,314 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 14:50:09,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 159 events. 6/159 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 344 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-01-27 14:50:09,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 165 transitions, 372 flow [2024-01-27 14:50:09,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 158 transitions, 352 flow [2024-01-27 14:50:09,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:50:09,344 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c92c252, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:50:09,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-01-27 14:50:09,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:50:09,348 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:50:09,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:50:09,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:09,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:50:09,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 86 more)] === [2024-01-27 14:50:09,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 17069, now seen corresponding path program 1 times [2024-01-27 14:50:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409936360] [2024-01-27 14:50:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:09,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:09,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409936360] [2024-01-27 14:50:09,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409936360] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:09,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:09,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:09,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605385494] [2024-01-27 14:50:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:09,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:09,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:09,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2024-01-27 14:50:09,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 158 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:09,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:09,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2024-01-27 14:50:09,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:17,047 INFO L124 PetriNetUnfolderBase]: 52718/72264 cut-off events. [2024-01-27 14:50:17,047 INFO L125 PetriNetUnfolderBase]: For 2853/2853 co-relation queries the response was YES. [2024-01-27 14:50:17,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141910 conditions, 72264 events. 52718/72264 cut-off events. For 2853/2853 co-relation queries the response was YES. Maximal size of possible extension queue 4283. Compared 540360 event pairs, 51885 based on Foata normal form. 2/65502 useless extension candidates. Maximal degree in co-relation 115886. Up to 65542 conditions per place. [2024-01-27 14:50:18,204 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 48 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-01-27 14:50:18,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 155 transitions, 446 flow [2024-01-27 14:50:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2024-01-27 14:50:18,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7797979797979798 [2024-01-27 14:50:18,217 INFO L175 Difference]: Start difference. First operand has 171 places, 158 transitions, 352 flow. Second operand 3 states and 386 transitions. [2024-01-27 14:50:18,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 155 transitions, 446 flow [2024-01-27 14:50:18,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 422 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-27 14:50:18,407 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 326 flow [2024-01-27 14:50:18,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-01-27 14:50:18,413 INFO L281 CegarLoopForPetriNet]: 171 programPoint places, -13 predicate places. [2024-01-27 14:50:18,414 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 326 flow [2024-01-27 14:50:18,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:18,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:18,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:50:18,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:50:18,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 86 more)] === [2024-01-27 14:50:18,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash 529770, now seen corresponding path program 1 times [2024-01-27 14:50:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:18,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620958865] [2024-01-27 14:50:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:18,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:18,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620958865] [2024-01-27 14:50:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620958865] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:18,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:18,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:18,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422880536] [2024-01-27 14:50:18,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:18,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 165 [2024-01-27 14:50:18,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:18,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:18,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 165 [2024-01-27 14:50:18,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:24,299 INFO L124 PetriNetUnfolderBase]: 52718/72261 cut-off events. [2024-01-27 14:50:24,312 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-01-27 14:50:24,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139174 conditions, 72261 events. 52718/72261 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 4283. Compared 540435 event pairs, 51885 based on Foata normal form. 2/65501 useless extension candidates. Maximal degree in co-relation 139136. Up to 65541 conditions per place. [2024-01-27 14:50:25,426 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 48 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-01-27 14:50:25,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 152 transitions, 420 flow [2024-01-27 14:50:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2024-01-27 14:50:25,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7737373737373737 [2024-01-27 14:50:25,429 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 326 flow. Second operand 3 states and 383 transitions. [2024-01-27 14:50:25,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 152 transitions, 420 flow [2024-01-27 14:50:25,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:25,432 INFO L231 Difference]: Finished difference. Result has 155 places, 152 transitions, 320 flow [2024-01-27 14:50:25,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2024-01-27 14:50:25,433 INFO L281 CegarLoopForPetriNet]: 171 programPoint places, -16 predicate places. [2024-01-27 14:50:25,433 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 320 flow [2024-01-27 14:50:25,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:25,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:50:25,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:50:25,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 86 more)] === [2024-01-27 14:50:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 16423492, now seen corresponding path program 1 times [2024-01-27 14:50:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:25,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850857012] [2024-01-27 14:50:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850857012] [2024-01-27 14:50:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850857012] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285015325] [2024-01-27 14:50:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:25,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:25,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 165 [2024-01-27 14:50:25,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 152 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:25,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:25,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 165 [2024-01-27 14:50:25,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand